<html>

<head>
  <meta charset="utf-8">
  <title>系统帮助</title>
  <!-- 引入 layui -->
  <link rel="stylesheet" href="/layui/css/layui.css">
  <link rel="stylesheet" href="/css/app.css">
</head>

<body>
  <script src="/js/http.js"></script>
  <script src="/layui/layui.js"></script>
</body>